Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description simply says 'Create a new label,' which aligns with the annotation readOnlyHint=false indicating a write operation. However, it does not add any behavioral context beyond the annotations, such as side effects, required permissions, or what happens if a label with the same name exists.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.